Post Utme Chemistry Past Questions and Answers

Question 791:

A finely divvied form of a metal burns more readily in air than the rod form because the rod has ____________

A. Higher molar mass
B. Smaller surface area
C. Protective oxide coating
D. Different chemical properties
E. Same chemical properties

Question 792:

One of the characteristics of transition metal is ____________

A. Reducing ability
B. Ductility
C. Ability to conduct electricity
D. Formation of coloured ion

Question 793:

The condensation of several amino acids molecules gives ____________

A. Long chain alkanoic acids
B. Secondary alkanols
C. Alkanoates
D. Proteins

Question 794:

Equilibrium is said to be attained in reversible reaction when ____________

A. All the reactants have been used up
B. All the products have been formed
C. There is no further change in temperature
D. The rates of the forward and backward reactions are equal
E. Rate of information of the product decreases with time

Question 795:

[image]
If the gas is cooled at what temperature will start to condensate?

A. 125°C
B. 150°C
C. 175°C
D. 250°C